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https://issues.apache.org/jira/browse/MAPREDUCE-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Eagles reassigned MAPREDUCE-1060:
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    Assignee: Jonathan Eagles

> JT should kill running maps when all the reducers have completed
> ----------------------------------------------------------------
>
>                 Key: MAPREDUCE-1060
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1060
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Jothi Padmanabhan
>            Assignee: Jonathan Eagles
>
> We have seen some situations where maps are still running when all the 
> reducers have completed. This could happen because of lost TT's, interplay of 
> speculative tasks with bad TT's etc. If the maps take a long time to run, it 
> unnecessarily delays the job completion time, as this map output is not 
> required anyways. The JT should possibly kill running maps when all the 
> reducers have completed.

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